The major components of the International Futures (IFs) modeling system are extensively documented in working papers, and documentation of any given component is updated at intervals to reflect additions and refinements as well as connections to other system components. Because of its evolving nature, it is important to note working paper numbers and dates when using and citing model documentation.
United Nations Environment Programme (UNEP). 2007. Global Environment Outlook: Environment for Development (GEO4). Nairobi, Kenya: United Nations Environment Programme.
Hughes, Barry B. 2006. "UNEP GEO4 Driver Scenarios Using IFS with Pardee." Working paper 2006.07.18. Pardee Center for International Futures, Josef Korbel School of International Studies, University of Denver, Denver, CO.
Chadwick, Richard W. 2006. “Korea 2020, National Security Futures, Development, Democracy, and Choices: Building a Korea Peace Structure.” Discussion paper. University of Hawaii, Honolulu, Hawaii.
Hughes, Barry B. 2005. "Scenario Analysis with International Futures." Working paper 2005.12.12. Pardee Center for International Futures, Josef Korbel School of International Studies, University of Denver, Denver, CO.
Hughes, B. B., & Johnston, P. D. (2005). Sustainable futures: Policies for global development in a global knowledge society. Futures, 37(8), 813–831. https://doi.org/10.1016/j.futures.2005.01.017